22936913 has 4 divisors (see below), whose sum is σ = 22946880. Its totient is φ = 22926948.

The previous prime is 22936897. The next prime is 22936943. The reversal of 22936913 is 31963922.

22936913 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22936913 - 2⁴ = 22936897 is a prime.

It is a super-2 number, since 2×22936913² = 1052203955939138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22936943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428 + ... + 6786.

It is an arithmetic number, because the mean of its divisors is an integer number (5736720).

Almost surely, 2^22936913 is an apocalyptic number.

It is an amenable number.

22936913 is a deficient number, since it is larger than the sum of its proper divisors (9967).

22936913 is an equidigital number, since it uses as much as digits as its factorization.

22936913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9966.

The product of its digits is 17496, while the sum is 35.

The square root of 22936913 is about 4789.2497324738. The cubic root of 22936913 is about 284.1264438940.

The spelling of 22936913 in words is "twenty-two million, nine hundred thirty-six thousand, nine hundred thirteen".